Doorknob-spindle lock



Feb. 10. 1925.

Filed Sept. 15. 1923 I r QQEMIIM ATTORNEYS Patented Feb. 19, 1925.

STATES tracer WILLIAJMI E. PARKER, 01-? NEVT BRITAIN, CONNECTICUT, ASSIGNOB TO THE AMERI- CAN HARDWARE CORPORATION, OF NEW BRITAIN, CONNECTICUT, A CORPORA- TION OF CONNECTICUT.

LDOORKNQB-SPINDLE LOCK.

Application filed September 15, 19533' T 0 all whom may concern:

Be it known that I, WILLIAM E. PARKER, a citizen of the United States of America, residing at New Britain, Connecticut, have invented a new and useful Doorknob- Spindle Lock, of which the following is a specification.

My invention relates to an adjustable knob spindle lock.

It is the principal object of my invention to provide novel means for securely looking a door knob onto its spindle, which will permit ready adjustment of the knob and spindle.

The invention may be best understood by an examination of the accompanying illustrative drawings, forming part of this specification, in which:

Fig. 1 is a side View in partial section of a knob spindle having a doorknob at each end;

Fig. 2 is a sectional view taken substantially in the plane of the line 2-2 of Fig. 1-

Fig. 3 is a fragmentary View in partial section of a modified form of spindle; and

Fig. 4 is a section taken substantially in the plane of the line 4-4 of Fig. 3.

In said drawings 55 indicate door knobs, which may be of any desired or conventional form. Since the two knobs may be of duplicate form, a description of one will suflice for both. The knob is provided with a shank 6, having a longitudinal aperture or bore 7 therein, which, in the form shown. is substantially rectangular in section. The knob spindle 8 is likewise preferably of angular form, to fit within the bore 7. The spindle 8 may have a longitudinally extending channel 9 therein, and the bottom of the channel is preferably serrated or corrugated, as will be clear from Figs. 1 and 2.

A locking member 10 is positioned within the bore 7 and fits the longitudinally extending channel 9 in the spindle. The lower edge of the locking member 10 is likewise preferably serrated, for providing a tight binding or looking fit with the spindle. The locking member 10 is held against longitudinal movement in the bore of the shank, as by means of a pin 11 extending into the knob shank and locking member. Clamping means, such as the screw 12, may be pro- Serial No. 662,851.

vided for forcing the locking member and spindle into tight engagement with each other.

It will be seen that when the screw 12 is set up, the locking member and spindle will firmly engage each other, and, since the 60 locking member 10 is held against longitudinal movement by the pin 11, the spindle will be very tightly locked to the door knob. A very slight backing off of the screw 12 will permit quick adjustment of the spindle rela- 05 tively to the knob.

In Figs. 3 and 4 has been shown a slightly modified form of spindle. Each locking member, in this modified form, may be of substantially the same form as that previously described. The spindle itself, in the modified form, includes an angular solid base member 13 and a channel member 14 thereon. The members 13 and 14 may, if desired, be secured together by any suitable means, such as a pin 15. The spindle, made up of the members 13 and 14, is, of course, of a size to fit within the boreof the knob shank. The solid member 13 is designed to give the necessary strength to the spindle, while the member 14 may, if desired, be formed of sheet metal, and the bottom of the channel may be roughened or serrated, as at 16, for the purpose of providing a good gripping surface for the serrated edge of the locking member 10.

The principal advantage of the composite spindle shown in Figs. 3 and 4 is that the channel member may be readily formed up, and it is unnecessary to form the channel in solid metal, as shown in Fig. 1. I wish it to be understood, however, that a channel is not, in all cases, necessary, since the locking function is performed by the looking member and bottom of the channel independently of the sides thereof.

While I have described preferred forms of the invention, I wish it to be understood that modifications may be made within the scope of the appended claims.-

I claim:

1. A knob and spindle construction comprising a knob having a spindle passage therein of angular cross section, a spindle of angular cross section only partially 1511- 105 ing said passage, an elongated locking member adapted to the space in the said passage not occupied by said spindle and movable bodily throughout its length toward and from said spindle, means to prevent longitudinal slippage of said locking member relatively to said knob, and a screw threadably carried by said knob for foreing said member into binding engagement with said spindle to lock said knob thereon in different positions of adjustment.

2. A two part door knob spindle comprising a base member and a second member 1 channeled throughout its length, said members bearing against each other side by side, the channel of the channeled member facing outwardly, and means to prevent one member from sliding longitudinally on the 15 other.

WILLIAM E. PARKER. 

